6.3
Underfloor heating/drying of jointless floors
Underfloor heating
The function block setting HC1–CO1–05 = ON defines heating circuit HC1 as an underfloor
heating circuit. This causes the controller at first to only restrict the value ranges for the heating
characteristic gradient and the maximum flow temperature in parameter level PA1:
4
Flow gradient (HC1–PA1–01): 0.2 to 1.0
4
Max. flow temperature (HC1–PA1–07): 5.0 to 50.0 °C
Drying of jointless floors
The function block parameters are required for the
drying of jointless floors
. They determine the
drying process: the first heating up phase starts at the entered 'Start temperature for drying of
jointless floors', which has a flow temperature of 25 °C in its default setting. In the course of 24
hours, this temperature is raised by the value entered in 'Temperature increase for drying of
jointless floors' i.e. the default setting causes the flow temperature set point to rise to 30 °C. If
the 'Max. temperature for drying of jointless floors' is reached, it is kept constant for the number
of days entered in 'Max. temperature sustaining time for drying of jointless floors'. 'Tempera-
ture reduction for drying of jointless floors' determines the temperature reduction downwards.
When temperature reduction is set to 0, the temperature maintaining phase moves directly to
the automatic mode. By setting 'Start drying of jointless floors' to '1', the drying of jointless
floors function is started. The restarting points 2 and 3 can be selected to continue an interrupted
drying process.
The drying process can be followed in the information level: in the
Control loop overview
menu
item, the messages "Jointl. floors (heating up)" is indicated during heating up, "Jointl. floors
(heating)" during the maximum temperature sustaining phase and "Jointl. floors (cooling)"
while the temperature is reduced. If the flow temperature deviates by more than 5 °C for over 30
minutes while the drying process is taking place, "Jointl. floors (error)" is displayed after drying
has been completed. Proper drying is indicated by "Jointl. floors (end)". Any power failure that
occurs while the function is running automatically restarts the drying function.
In systems in which the drying function had to be interrupted due to DHW heating (e.g. system
Anl 2.0.0), storage tank charging does not occur while the drying function is active, provided it
is not used for frost protection of the storage tank.
NOTICE
The function block parameters can only be accessed when the function has started by deactivat-
ing the function block and activating it again.
EB 5610 EN
59
Functions of the heating circuit
Summary of Contents for trovis 5600
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